refactor: move CommandAPI as runtime library

feat: 'pairmodel' mechanic (experimental)

BetterModel 1.13.0

Add

• 1.21.9 support
• component logging

Change

• optimize state handler

Fix

• animation script
• 'hold on last' animation type
• model resolution
• step interpolation
• exception handling on tick

Full change log

fix: NPE

fix: exception handling

fix: Spigot compatibility

fix: step interpolation

chore: clean repository

chore: fix build script

chore: separate spigot and paper jar

chore: add spongepowered repo

chore: update README.md